A Spatial Finite Size Scaling Method for calculation of Critical Parameters for Weakly Bound States

PABLO SERRA

PHYSICS LETTERS A

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2002 vol. 303 p. 20 - 24

0375-9601

We present a finite size scaling approach to calculate critical parameters and exponents of quantum few-body system for which a bound state energy becomes absorbed or degenerates with the continuum. The scaling is done by introducing a cutoff radius for the potential. The asymptotic behavior for large values of the cutoff parameter is determined by the exact critical parameters.